| cubic foot | |
|---|---|
 Gas meter with volume measured in cubic feet | |
| General information | |
| Unit system | Imperial andUS Customary |
| Unit of | Volume |
| Symbol | ft3, cu ft |
| Conversions | |
| 1 ft3in ... | ... is equal to ... |
| US Customary | 1728 in3 1⁄27 yd3 |
| SI units | 0.028316846592 m3 |
Thecubic foot (symbolft3 orcu ft)[1] is animperial andUS customary (non-metric)unit of volume, used in the United States and the United Kingdom. It is defined as the volume of acube with sides of onefoot (0.3048 m) inlength, or exactly28.316846592 L, which is very close to1/35 of acubic metre).
| 1 cubic foot | ≡ 1728cubic inches | |
| ≡1/27 of acubic yard | ||
| ≡28.316846592 L | ||
| ≡7+37/77 USgallons | ||
| ≡957+39/77 USfluid ounces | ||
| ≈6.228835 imperial gallons | ||
| ≈ 996.6137 imperial fluid ounces | ||
| ≡86400/107521 USbushels | ||
| ≈0.7786044imperial bushels | ||
| ≡96/539 oilbarrel | ||
TheIEEE symbol for the cubic foot is ft3.[1] The following abbreviations are used: cubic feet, cubic foot, cubic ft, cu feet, cu foot, cu ft, cu.ft, cuft, cb ft, cb.ft, cbft, cbf, feet3, foot3, ft3, feet/-3, foot/-3, ft/-3.[citation needed]
Larger multiples are in common usage in commerce and industry in the United States:
TheIEEE symbol for the cubic foot per second is ft3/s.[1] The following other abbreviations are also sometimes used:
The flow ordischarge of rivers, i.e., the volume of water passing a location per unit of time, is commonly expressed in units of cubic feet per second or cubic metres per second.
Cusec is a unit of flow rate,[2] used mostly in the United States in the context of water flow, particularly of rivers and canals.
Conversions: 1 ft3s−1 = 0.0283168 m3/s = 28.3168 L/s = 1.699011 m3/min = 1,699.011 L/min
TheIEEE symbol for the cubic foot per minute is ft3/min.[1] The following abbreviations are used:
Cubic feet per minute is used to measure the amount of air that is being delivered, and is a common metric used for carburetors,[3] pneumatic tools, and air-compressor systems.[4]
A standard cubic foot (abbreviated scf) is a measure of quantity of gas, sometimes[clarification needed] defined in terms ofstandard temperature and pressure as a cubic foot of volume at 60 °F (16 °C; 289 K) and 14.7pounds per square inch (1.01 bar; 101 kPa) ofpressure.[citation needed]